https://openjdk.java.net/projects/openjfx/javafx-base/: OpenJFX JavaFX
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public interface javafx.beans.binding.NumberBinding extends javafx.beans.binding.Binding<java.lang.Number>, javafx.beans.binding.NumberExpression
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: javafx.beans.binding.NumberBinding
  super_class: java.lang.Object
{
}
Signature: Ljava/lang/Object;Ljavafx/beans/binding/Binding<Ljava/lang/Number;>;Ljavafx/beans/binding/NumberExpression;
SourceFile: "NumberBinding.java"